
30 talik test -6
Authored by Bobomurod Abdixashimov
Chemistry
11th Grade
Used 3+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
X2YZ3 birikmasida elementlarning massa nisbatlari 2:7:9 ga teng. Bunga ko‘ra 10 g X, 28 g Y va 27 g Z larning reaksiyasidan maksimal necha gramm X2YZ3 olish mumkin?
90
72
54
45
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quyidagi zarrachalar haqidagi noto‘g‘ri xulosani ko‘rsating.
A va Y o‘zaro izotop
Y va Z o‘zaro izoton
Y va Z o‘zaro isobar
Z tarkibidagi proton va neytronlar soni teng
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qaysi javobda elementlar elektromanfiyligi ortib borish tartibida joylashgan?
C, Si, Ge, Pb, Sn
Li, Na, K, Rb, Cs
I, Br, Cl, F, H
Na, Mg, Al, P, Cl
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Xn ioni tarkibidagi oxirgi elektron uchun kvant sonlar n = 3, l = 1, m1 = 0, ms = +0,5 qiymatga ega. X element davriy jadvalda 3–davr, VII A guruhchada joylashgan bo‘lsa, n ning qiymatini toping.
+1
+5
+7
+3
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Poloniy (209) izotopi pozitron hosil qilib parchalandi. Bunda neytronlar soni to ‘rt birlikka ortgan bo‘lsa, 104,5 mg poloniy parchalanganda ajralgan pozitronlar sonini aniqlang.
0,04 ⦁ Na
0,02 ⦁ Na
0,002 ⦁ Na
0,004 ⦁ Na
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
NH3 + H+ = NH4+ jarayonda quyidagilardan qaysi biri o'zgaradi?
markaziy atomning oksidlanish darajasi
markaziy atomning gibridlanishi
zarrachaning fazoviy shakli
markaziy atomning gibridlanishi
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Molekular kristall panjarali moddalar qatorini belgilang.
) NaCl, F
Si, Ge
CO2, Si
S8, O3
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